三个js面顶点uv贴图三角形:如何仅缩放1个方向

// 导入Three.js库
import * as THREE from 'three';

// 创建场景
const scene = new THREE.Scene();

// 创建几何体对象
const geometry = new THREE.Geometry();
geometry.vertices.push(
  new THREE.Vector3(-1, -1, 0),
  new THREE.Vector3(1, -1, 0),
  new THREE.Vector3(0, 1, 0)
);

// 定义UV坐标
geometry.faceVertexUvs[0].push([
  new THREE.Vector2(0, 0),
  new THREE.Vector2(1, 0),
  new THREE.Vector2(0.5, 1)
]);

// 创建材质对象
const material = new THREE.MeshBasicMaterial({
  map: new THREE.TextureLoader().load('texture.png')
});

// 创建网格对象
const mesh = new THREE.Mesh(geometry, material);

// 将网格对象添加到场景中
scene.add(mesh);

// 创建相机
const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.z = 5;

// 创建渲染器
const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

// 渲染场景
function animate() {
  requestAnimationFrame(animate);
  mesh.rotation.x += 0.01;
  mesh.rotation.y += 0.01;
  renderer.render(scene, camera);
}
animate();